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    <title>Document</title>
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<script>
    let AA=[12,11,9,6,3,12,66]
    function bubbleSort(arr) {
    var len = arr.length;
    for (var i = 0; i < len; i++) {
        for (var j = 0; j < len - 1 - i; j++) {
            if (arr[j] > arr[j+1]) {        // 相邻元素两两对比
                var temp = arr[j+1];        // 元素交换
                arr[j+1] = arr[j];
                arr[j] = temp;
               }
           }
        }
        return arr;
    }
    console.log(bubbleSort(AA))

</script>
</html>